Telephone head set



Mada-24. 1925.

A. P. YOUNG ET AL.

TELEPHONE HEAD SET Filed Jung 2. 1924 Inventors" Arthur PYoung John Henry Butcher b Frederick A.Fossey fll4nfi 4 f y Thetr-Atiorngy Patented Mar. 24, 1925.

UNITED STATES PATENT FFKZE.

ARTHUR PRIMROSE YO'UNG, OF KENILWOR'II-I, JOHN H. BUTCHER, OF RUGBY, AND

FREDERICK A. FOSSEY, 0F COVENTRY,

ENGLAND, ASSIGNOBS TO GENERAL ELEC- TRIC COMPANY, A CORPORATION OF NEW YORK.

TELEPHONE HEAD SET.

Application filed June 2,

T 0 all whom, it may concern:

Be it known that we, ARTHUR PRIMROSE YOUNG, JOHN HENRY BUTCHER, and Fnennnrcn AMBROSE Fossnr, subjects of the British Empire, residing, respectively, at Kenilworth, at Rugby, and at Coventry, all in the county of lVarwick, England, have invented certain new and useful Improvements in Telephone Head Sets (for which we have filed application in England, May 12, 1923, No. 12,777), of which the following is a specification.

Our present invention relates to telephone head sets of the type in which the receivers which are carried by a head band are adapted, when being used, to rest over the cars. In the reception of wireless or ordinary telegraphy or telephony, it is customary to use apparatus of this kind which permits of adjustment between the receivers and the head band.

The object of the present invention is to provide adjusting means which are both cheap and easy to manufacture and as semble, and at the same time are less liable to become entangled with the hair or coilfure of the person using the instrument.

According to the present invention, the receiver is secured to the head band gear by means of a telescopic support comprising a tube, rod or strut adapted to slide longitudinally of a tubular or channel-shaped member.

The head band may consist of one or more steel spring rods or wires, the periphery of which is circular, oval or curved. The telescopic supports for the receivers may be secured respectively to opposite ends of the head band and the other ends of the telescopic supports may each carry a U-shaped bracket between the ends of which the receiver is rotatably mounted. Instead of this stirrup mounting, a mounting giving universal movement, such as a ball and socket joint, or any other type of mounting may be employed.

Preferably, the inner telescopic member is a mild steel rod or tube of circular periphery, into the outer end of which may be brazed or soldered the end of the head band. The outer telescopic member is preferably provided on one side with a longitudinal slot, and clamping means, compris- 1924. Serial No. 717,358.

ing a screw or bolt (which may carry a milled head) and a washer, may be provided to register with this slot. The washer may be a flat disc of greater width than the width of the slot, or it may be in the form of a ring or saddle surrounding the outer telescopic member. Preferably the slot is of greater width than the width of the screw or bolt stem in order to permit of limited rotational movement between the telescopic members.

alternately the outer telescopic member may be formed of a resilient material (for example, phosphor bronze) and slit longitudinally of its whole length in order to make it a frictional clamp upon the inner member. In this case the adjusting screw may be replaced by a small-headed or counter-sunk screw which would only require to be operated occasionally when the friction between the telescopic members had decreased below an amount necessary for the members to remain clamped in an ad justed position; or the screw may be dis pensed with entirely, being replaced by a lug or the like formed on the end of the inner member, adapted to work in the abovementioned slot to prevent the telescopic members from coming apart or rotating too far with respect to one another.

The novel features which we believe to be characteristic of our invention are set forth with particularity in the appended claims. Our invention, itself, however, both as to its organization and method of operation will best be understood by reference to the following description taken in connection with the accompanying drawing in which Figs. 1 and 3 are end elevations of two different constructions of telephone head-sets, and Figs. 2 and 4- are side elevations respectively of the devices shown in Figs. 1 and 3. Like reference numerals are used to denote similar parts.

In the accompanying drawings a telephone receiver 11 has moulded into it, at the ends of a diameter, studs 12, adapted to fit into corresponding holders in a Ushaped bracket 13. The bracket is secured by means of a telescopic support 14: to the head band, which comprises wires 15. Into the back of the receiver 11 there is moulded a boss 16, to which is secured, by

means of a screw 17 an arm 18, adapted, by bearing against the middle of the U-shaped bracket 13, to prevent the receiver from rotating about its mounting more than a predetermined amount. The telescopic support comprises an inner member 19 and an outer member 21, the two being secured together by clamping means, comprising a screw 22 adapted to screw through a hole in a U-shaped washer 23 into the inner member In Figs. 1 and 2 the member 19 is a tubular rod with holes on opposite sides at its free end, which holes are adapted to receive the ends of the wires 15. The wires 15 are bent as shown at 2a and arranged to run down the interior of the tubular member 19, as shown at 25. The open end of the member 19 is closed by a plug 26, held in position by a rivet 27. member 21 is provided with a slot 28 which registers with the stem of the screw 22. The U-bracket 13 is riveted to a cylindrical plug 29 secured to the free end 01" the member 21 by a rivet 31.

In Figs. 3 and 4 the member 19 is a rod provided at its free end with a hole 32 into which is brazed or soldered the free ends of the wires 15. The U-bracket 13 is formed integrally with the outer telescopic member 21 and the latter is slit longitudinally as shown at 33.

In the preceding figures it should benoticed that the stem of the adjusting screw 22 is of less diameter than the width of the slot 28 (but of greater diameter than the width of the slit This will permit oi. limited rotation between the telescopic members 19 and 21, but at the same time will prevent their being taken apart, unless the screw be entirely withdrawn. The friction between the two members 19 and 21 can be increased or reduced by turning the screw 22, and preferably this is set so that the telescopic support can be closed in or opened out Without the necessity of first loosening the screw.

While in the above description the receiver is secured to the outer telescopic member, it will be obvious that the invention can equally well be applied to cases in which the head band is secured to the outer telescopic member.

What we claim as new and desire *to secure by Letters Patent of the United States, is

1. A telephone head set comprising a telephone receiver and a head-band, and hav- The outer telescopic ing a telescopic connection between the telephone receiver and the head-band.

2. A telephone head set comprising a telephone receiver and a head-band, and a U- shaped bracket on which the receiver is mounted, said bracket being connected to one end of a telescopic support the other end of which is secured to the head-band.

3. A telephone head set comprising a telephone receiver and a head-band, and a telescopic support for said receiver comprising two telescoping members, one of which is secured to the telephone receiver and the other of which is secured to the head-band.

1. A telephone head set comprising a telephone receiver and a head-band, a telescopic support for said receiver comprising two telescoping members, one of which is se cured to the telephone receiver and the other of which is secured to the head-band, the outer of said telescoping members being provided with a slot and clamping means secured to the inner member and extending through said slot whereby the two members may be held in desired space relation to each other.

5. A telephone head set comprising a telephone receiver and head-band, a telescopic support for said receiver comprising two telescoping members, one of which is se cured to the telephone receiver and the other of which is secured to the head-band, the outer of said telescoping members being provided with a slot and clamping means secured to the inner member and extending through said slot whereby the two members may be held in desired space relation to each other, said clamping means comprising a screw which registers with the slot and which is of less diameter than the width of the slot whereby a limited rotational movement between the members is permitted.

6. A telephone head set comprising a tele phone receiver and a head-band, and a telescopic support for said receiver comprising two telescoping members, one of which is secured to the telephone receiver and the other of which is secured to the head-band, said head-band consisting of a pair of wires which are engaged in openings in the telescopic member to which the head-band is attached.

In witness whereof, we have hereunto set our hands this fifteenth day of May 192%.

ARTHUR PRIMROSE YOUNG. JOHN H. BUTCHER. FREDERICK A. FOSSEY. 

